Grease cup



May 15, 1923.

1,454,892 R. HUNT ET AL GREASE CUP Filed March 12, 1921 2 Sheets-Sheet 1may 15, 1%. 1,454,892

R. HUNT ET AL, GREASE 6UP Filed March 12, 1921 2 Sheets-Sheet. 2

gummtou 2? Hunt, L 19. f reelrwv Patented May 15, 1923.

UNHTED STATES ear-ear eeeien.

ROBERT HUNT AND LEWIS D. FREEMAN, OF PORTSMOUTH, VIRGINIA, ASSIGNORS, BY

MESNE ASSIGNMENTS, 'IO UNION METAL PRODUCTS COMPANY, OF CHICAGO, ILLI-NOIS, A CORPORATION OF DELAW'ARE.

GREASE CUP.

App1ication filed March 12, 1921. Serial No. 451,71

T 0 all whom it may concern:

Be it known that we, Ronnn'r. HUNT and LEWIS D. FREEMAN, citizens of theUnited States, residing at Portsmouth, in the county of Norfolk andState of Virginia, have invented certain new and useful Improvements inGrease Cups, of which the following is a specification.

This invention relates to grease cups and more especially to that typeemployed upon locomotive driving rods and in similar locations. Suchcups as ordinarily constructed are open to the objection that the plugsor followers thereof are liable to work out due to the vibration towhich are subjected, and become lost with the result that the bearing isliable to become overheated and delays are caused. It is therefore oneof the primary objects of the present invention to provide means forpreventing loss of the plug or follower of a grease cup of this type.

Another object of the invention is to provide means for the purposestated above which will not in any way interfere with intentionaladjustment of the plug so as to feed the grease from the cup to thebearing.

Another object of the invention is to provide in connection with the cupand its plug or follower, means adapted to automatically lock or bindthe plug should it be slightly backwardly rotated through the vibrationto which it is subjected and which means will likewise tend to maintainthe plug in positions of adjustment.

In the accompanying drawings:

Figure 1 is a side elevation of the grease cup embodying the invention;

Figure 2 is a vertical diametric sectional view therethrough;

Figure 3 is a horizontal sectional view taken substantially on the line3-3 of Figure 2 looking in the direction indicated by the arrows;

Figure 1 is a View similar to Figure 1 illustrating the application ofthe principles of the invention to another structure.

In the drawings, the cup is indicated in general by the numeral 1 andthe plug or follower by the numeral 2. The cup 1 comprises a hollowsubstantially cylindrical body 3 which is to be fitted or welded orotherwise secured, as at 4, in a seat 5 provided for the reception ofits lower end in the part which carries the bearing to be lubricated andwhich in Figure 2 is illustrated in thenature of a locomotive drivingrod 6.

The body 3 of the cup 1 is interiorly threaded as indicated by thenumeral 7, and adjustably fitted into the bore of the body is the lowerportion of the plug 2,the plug being exteriorly threaded, as ,at 8, tofit the threads 7. of the said body 3. At'its upper end the plug may beof the rectangular form illustrated in the drawings and indicated by thenumeral 9 to provide for the application of a wrench thereto, or it maybeformed in its upper end with a rectangular-socket to adapt it for theapplication of a wrench of a different type. v

v.lt will be understood that, the cup being packed with grease, thegrease may be fed to the hearing as required by rotatably adjusting theplug 2 from time to time.

Incarrying out the invention, in that form illustrated in Figures 1, 2and 3, the grease cup 1 is provided at the upper end of its body 8 atone side with an abutment member 9 the upper face 10 of which is locateda plane spaced above the plane of the upper end of the said body 3. Thehead 11 upstands from the outer end of the abutment member 9 and isprovided at its upper end with an inwardly directed abutment member 12which is located above and in spaced parallel relation to the member 9.A ring nut 13 is threaded onto the plug 2 and has its peripheralportionprojecting between the abutment members g and 12 as bestillustrated in Figures 1 i and 2. It will now be evident thatif the nut13 is threaded down on the plug 2 until its peripheralportion bindsagainst the up perface .10 of the abutment member 9, the i engagement ofthe peripheral portion of the nut against this face will result in aslight canting of the nut so as to cause its threads to bind the threads8 of the said plug 2. When it is desired to adjust the plug 2 and feedthe same into the cup so as to compress and eject the grease containedtherein, the

nut 13 is to be loosened and threaded in an upward direction upon theplug whereupon the plug may be adjusted in the manner stated. The nutmay then be rotatably adjusted so as to bind either against the face 10of the abutment member 9 or against the under face of the abutmentmember 12 and in either event its threads will bind the threads of theplug and the plug will be held ment member 12 and bind the plug so as toarrest its loosening movement. Therefore the plug is normally held inthe position to which it is adjusted but should it become loosened andturned backwardly, this movement will be eventually stopped. and theplug will be locked.

In the embodiment of the invention shown in Figure 4-, the numeral 1lindicates the ma chine part through which lubricant is to be fedthrough a. grease cup 15 which is of a type different from that shown inthe other figures of the drawings and which is provided with 'a threadedneck 16 fitted into the said machine part A locking device 17 comprisingspaced abutment members 18 and 19 is secured upon the machine part i lin juxtaposition t0 the threaded stem 15 of the grease cup 16 and a nut20 is threaded onto the said stem 15 and has its peripheral portionprojecting between the abutment members 18 and 19. Thus the presence ofthe nut 20 and its coaction with the abutment members 18 and 19 servesto prevent unthreading of the stem 16 of the grease cup "from theopening in the machine part 14 and its conse 'uent loss.

*laving thus described the invention, what is claimed as new is:

1 In a device of the class described, a relatively I fixed part, amember adj ustably threaded into the said lined part, inner and outerabutments lined with relation to the fixed part and relatively spacedand rigidly connected, and a locking element threaded on to theadjustable member and having its peripheral portion projecting betweenthe said abutments, the said locking element being adjustable to bindagainst the inner abutment to lock the adjustable member in itspositions of adjustment and being designed to bind against the outerabutment in the event of loosening of the parts where by to preventcomplete disengagement of the adjustable member from the relativelyfixed part.

2. In a device of the class described, a

abutment fixed with relation to the cup and having a face spaced beyondthe end of the cup at one side of the bore of the cup, an abutmentspaced from the first-mentioned abutment and iii-zed with. relationthereto, and a locking; nut threaded on to the plug: and having itsperipheral portion projecting between the abut-merits whereby when thenut is adjusted in the direction of the cup it will be caused to bindagainst the face of the first-mentioned abutment and efiiect a bindingaction to hold the plug; in positions of adjustment, and, in the eventof loosening of the parts, will bind against the OPpOS l fip face of theother abutment whereby to prevent complete separation of the plug "fromthe cup.

3. In a device of the class described, a grease cup, a plug threadedinto the cup, a locking; nut threaded on to the plug, and spacedrelatively rigid abutments integral with the cup and between which thepe ripheral portion of the locking nut projects, the distance betweenthe opposing faces of said abutments-being somewhat greater than thethickness of the locking nut whereby to permit of loosening oithe nutfor the pur- 'a 1- pose oi efliecting an ad ustment of the said plugwithout permitting complete separation of the plug: from the cup in theevent oi accidental loosening of the plug or nut. I

l. In a device of the class described, a grease cup having a threadedbore opening through one end thereof, an abutment fixed with relation tothe cup and'proj'ecting latorally therefrom and having an abutment faceat one side oi the be of the cup spaced beyond the said end of the cup,an abutment spaced beyond the first-mentioned abutment and linedwithrelation thereto and having an abutment face opposing the face of?the first-mentioned abutment, a plug adjustably threaded into the saidbore of the cup, and a nut threaded on to the said plug and having itsperipheral. portion projecting between the said faces of the abutmentswhereby to impinge against either abutment and be canted to preventmovement of the plug, the distance between the abutment faces beingcmisiderably greater than the thickness of the peripheral portion'ot'the nut.

ln testimony wl'iereol we lath our signatures.

ROBERT HUNT. L.s. LEWIS D. FREEMAN. [as]

